s390/kexec: Fix checksum validation return code for kdump

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Before kexec boots to a crash kernel it checks whether the image in memory
changed after load. This is done by the function kdump_csum_valid, which
returns true, i.e. an int != 0, on success and 0 otherwise. In other words
when kdump_csum_valid returns an error code it means that the validation
succeeded. This is not only counterintuitive but also produces the wrong
result if the kernel was build without CONFIG_CRASH_DUMP. Fix this by
making kdump_csum_valid return a bool.

Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Philipp Rudo 2017-10-17 12:28:08 +02:00 • committed by Martin Schwidefsky

parent 7f581d03bd

commit 7c3eaaa391

1 changed files with 3 additions and 3 deletions

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arch/s390/kernel/machine_kexec.c

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